`sin (750^@)=`

Prove that sin750^(@)cos480^(@)+cos120^(@)cos60^(@)=(-1)/2

Find the value of cosec 750^(@)

Convert 750^(@) into radians ?

The value of "cosec"(-750^(@)) is

Find the values of (i) " sin "405^(@) " " (ii) " sec " (-1470^(@)) " "(iii) " tan " (-300^(@)) (iv) " cot " (585^(@)) " "(v) " cosec " (-750^(@)) " "(vi) " cos " (-2220^(@))

On heating at 750^(@)C , blue virtiol yields

Draw the angles of the following measures and determine their quadrants. 750^@

tan750^@ = ……….